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Peer-reviewedCC BY 4.0Nature Communications

Massive release of predominantly magmatic carbon drove an Early Jurassic hyperthermal

  • Wenhan Chen1,2
  • Yuyang Wu3
  • David B Kemp4
  • Ying Cui5
  • Alexandre Pohl6
  • Wolfgang Ruebsam7
  • Dongyu Zheng1
  • Chao Li8,9
9 affiliations
  1. 1State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation & Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu, China.
  2. 2International Center for Sedimentary Geochemistry and Biogeochemistry Research, Chengdu University of Technology, Chengdu, China.
  3. 3College of Marine Science and Technology, China University of Geosciences, Wuhan, China.
  4. 4State Key Laboratory of Geomicrobiology and Environmental Changes and Hubei Key Laboratory of Critical Zone Evolution, School of Earth and Planetary Sciences, China University of Geosciences, Wuhan, China. [email protected].
  5. 5Department of Earth and Environmental Studies, Montclair State University, Montclair, NJ, USA. [email protected].
  6. 6Université Bourgogne Europe, CNRS, Biogéosciences UMR 6282, Dijon, France.
  7. 7Department of Organic and Isotope Geochemistry, Institute of Geoscience, Kiel University, Kiel, Germany.
  8. 8State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation & Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu, China. [email protected].
  9. 9International Center for Sedimentary Geochemistry and Biogeochemistry Research, Chengdu University of Technology, Chengdu, China. [email protected].
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Abstract

The Toarcian Oceanic Anoxic Event (T-OAE, ~183 Ma) was a major hyperthermal event in the Phanerozoic, characterised by massive carbon release and widespread organic carbon burial. However, the source(s), flux, and sequestration pathways of carbon remain uncertain. Here, we assimilate globally representative carbon isotope and atmospheric CO₂ records into an Earth system model to decipher the carbon cycle during the T-OAE. Our simulations indicate the release of ~18,000 Pg C of predominantly magmatic carbon through the T-OAE, though with an input of carbon from thermogenic and/or biogenic sources at the onset of the event. We show that at least 6,800 Pg of organic carbon was buried during the event, which, combined with silicate weathering-driven excess carbon consumption ( ~6,000 Pg C), helped the Earth's climate system to recover from large-scale carbon release. Our results provide quantitative constraints on the tempo, magnitude, and recovery mechanisms of carbon-cycle perturbations during extreme greenhouse intervals.

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Cite

BibTeXRIS
BibTeX
@article{chen2026massive,
  title = {{Massive release of predominantly magmatic carbon drove an Early Jurassic hyperthermal}},
  author = {Wenhan Chen and Yuyang Wu and David B Kemp and Ying Cui and Alexandre Pohl and Wolfgang Ruebsam and Dongyu Zheng and Chao Li},
  journal = {Nature Communications},
  year = {2026},
  month = sep,
  doi = {10.1038/s41467-026-77747-y},
  url = {https://hal.science/hal-05756412v1},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Massive release of predominantly magmatic carbon drove an Early Jurassic hyperthermal
AU  - Wenhan Chen
AU  - Yuyang Wu
AU  - David B Kemp
AU  - Ying Cui
AU  - Alexandre Pohl
AU  - Wolfgang Ruebsam
AU  - Dongyu Zheng
AU  - Chao Li
PY  - 2026
DA  - 2026/09/18
JO  - Nature Communications
DO  - 10.1038/s41467-026-77747-y
UR  - https://hal.science/hal-05756412v1
AB  - The Toarcian Oceanic Anoxic Event (T-OAE, ~183 Ma) was a major hyperthermal event in the Phanerozoic, characterised by massive carbon release and widespread organic carbon burial. However, the source(s), flux, and sequestration pathways of carbon remain uncertain. Here, we assimilate globally representative carbon isotope and atmospheric CO₂ records into an Earth system model to decipher the carbon cycle during the T-OAE. Our simulations indicate the release of ~18,000 Pg C of predominantly magmatic carbon through the T-OAE, though with an input of carbon from thermogenic and/or biogenic sources at the onset of the event. We show that at least 6,800 Pg of organic carbon was buried during the event, which, combined with silicate weathering-driven excess carbon consumption ( ~6,000 Pg C), helped the Earth's climate system to recover from large-scale carbon release. Our results provide quantitative constraints on the tempo, magnitude, and recovery mechanisms of carbon-cycle perturbations during extreme greenhouse intervals.
SN  - 2041-1723
SN  - 2041-1723
ER  -